Solve the system of equation and explain geometrically how you know that your answers are solutions to the system. x^2+y^2 =100 and 3x - y = 30 how you know

Length of bottom base = 8x + 18 - (unknown)

To get the missing length of the lower base of the trapezoid, we need to use the formula for the perimeter of a trapezoid:
Perimeter = sum of all sides
For a trapezoid, this means:
Perimeter = length of top base + length of bottom base + length of left side + length of right side
In this case, we know that the perimeter is 8x + 18. We also know that the length of the top base and the lengths of the left and right sides are not given, so we'll just represent them with variables:
Perimeter = (length of top base) + (length of bottom base) + (length of left side) + (length of right side)
8x + 18 = (unknown) + (length of bottom base) + (unknown) + (unknown)
Simplifying:  8x + 18 = length of bottom base + (unknown)
Now we just need to isolate the length of the bottom base:
8x + 18 - (unknown) = length of bottom base
We can't simplify this any further without more information about the trapezoid, but we can say that the missing length of the lower base is:
Length of bottom base = 8x + 18 - (unknown)

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Answer: 7.1

Step-by-step explanation:

Use pythagorean again.

c²=b²+a²      

c=distance

a= distance in x direction = 7

b= distance in y direction =1

plug it in

d²=7²+1²

d²=49+1

d²=50

d=√50    put in calculator

d=7.1

The 96% confidence interval for the population mean is (764.34, 795.66) and a sample size of at least 123 bulbs is needed to be 96% confident that the sample mean will be within 10 hours of the true mean.

a) To find the 96% confidence interval for the population mean, we can use the formula:

CI = x ± z* (σ/√n)

where x is the sample mean, σ is the population standard deviation, n represents the sample size, and z* represents the critical value for the desired level of confidence.

From the given information, we have x = 780, σ = 40, n = 30, and we can find the critical value using a standard normal distribution table or a calculator. For a 96% confidence level, the critical value is 1.750.

When these values are entered into the formula, we get:

CI = 780 ± 1.750 * (40/√30)

CI = 780 ± 15.66

Therefore, the 96% confidence interval for the population mean is (764.34, 795.66).

b) To determine the sample size needed to be 96% confident that our sample mean will be within 10 hours of the true mean, we can use the formula:

n =[tex](z* \sigma / E)^2[/tex]

where z* is the crucial value for the desired level of confidence, standard deviation is the population standard deviation , E is the maximum error or margin of error, and n is the sample size.

From the given information, we have z* = 1.750, σ = 40, and E = 10. When these values are entered into the formula, we get:

[tex]n = (1.750 * 40 / 10)^2[/tex]

n = 122.5

Therefore, we need a sample size of at least 123 bulbs to be 96% confident that our sample mean will be within 10 hours of the true mean.

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Alleen's mom is not correct because if her friend reads 20 pages, she can read 30 pages in the same time period.

To answer this question, we need to use the terms "ratio" and "proportion". The given ratio of Alleen's reading speed to her friend's speed is 1.5:1. If Alleen's friend reads 20 pages, we can use proportion to find how many pages Alleen can read:

1.5 / 1 = x / 20

To solve for x (the number of pages Alleen reads), we can cross-multiply:

1.5 * 20 = 1 * x
30 = x

So, if Alleen's friend reads 20 pages, Alleen can read 30 pages in the same time period.

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Answer:

no solution

Step-by-step explanation:

There are no values of x that make the equation true.

The area of the swimming pool cover obtained by considering the area as the sum of the areas of a rectangle and two semicircles is about 218.54 ft²

The area of a semicircle is; A = π·D²/(2 × 4) = π·D²/8

The area of the swimming pool cover can be found from the area of the composite figure comprising of one rectangle and the two semicircles as follows;

The length of the parallel sides which represent the length of the rectangle = 14 ft

The distance the parallel sides are apart = The width of the rectangle = 10 ft

The width of the rectangle = The diameter of the semicircle part of the swimming pool = 10 ft

Area of the rectangle = 14 ft × 10 ft = 140 ft²

Area of the two semicircle = 2 × π × (10 ft)²/8 = 25·π ft²

The area of the swimming pool cover = 140 ft² + 25·π ft² ≈ 218.54 ft²

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George's new store will have a profit of $5,400 in its fifth month in business.

We are given two functions: r(x) = x^2 + 5x + 14 for revenue, and c(x) = x^2 - 4x + 5 for expenses. We are asked to find the meaning of (r - c)(5).

Step 1: Subtract c(x) from r(x) to find (r - c)(x)
(r - c)(x) = r(x) - c(x) = (x^2 + 5x + 14) - (x^2 - 4x + 5)

Step 2: Simplify the expression
(r - c)(x) = x^2 + 5x + 14 - x^2 + 4x - 5 = 9x + 9

Step 3: Evaluate (r - c)(5)
(r - c)(5) = 9(5) + 9 = 45 + 9 = 54

The value (r - c)(5) = 54 represents the difference between the revenue and expenses in the store's 5th month of operation, measured in hundreds of dollars. In other words, George's new store will have a profit of $5,400 in its fifth month in business.

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The profit function P(x) is given as P(x) = (x-4)^2 - 4. To find critical numbers, the derivative of P(x) is calculated and set to zero. The intervals where the function is decreasing are determined by analyzing the sign of P'(x) on the intervals determined by the critical number(s).

Let's address each part step by step:

(a) First, let's simplify the profit function, P(x), which is given by P(x) = (x - 4)^2 - 4. To find the critical numbers, we need to find the derivative of the profit function with respect to x and set it to zero.

P'(x) = d/dx [(x - 4)^2 - 4]
P'(x) = 2(x - 4)

Now, set P'(x) to zero and solve for x:
2(x - 4) = 0
x - 4 = 0
x = 4

So, there is one critical number, x = 4.

(b) To determine the intervals where the function is decreasing, we need to analyze the sign of P'(x) on the intervals determined by the critical number(s).

For x < 4, P'(x) = 2(x - 4) < 0, which means the function is decreasing.
For x > 4, P'(x) = 2(x - 4) > 0, which means the function is increasing.

In interval notation, the function is decreasing on the interval (-∞, 4). Keep in mind that the original function has a domain restriction of 0 ≤ x ≤ 5, so considering that, the production levels where the profit function is decreasing are on the interval (0, 4).

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Answer:

2.41

Step-by-step explanation:

postive = add negative = subtract

The rate of increase, we can see that the function is an exponential growth model with a base of 1.04, which means that the population increases by 4% each year.

There seems to be an error in the problem statement. If the function P(x) = 88,200(1.04)^x models the population after the year 2002, then it doesn't make sense to ask for the population in the year 2000, which is two years before 2002.

Assuming that the function is correctly stated and represents the population after 2002, we can find the population after a certain number of years by plugging that number into the function. For example, to find the population after 5 years (in 2007), we would use:

P(5) = 88,200(1.04)^5 = 105,159.43

This means that the population of the city in 2007 would be approximately 105,159 people.

As for the rate of increase, we can see that the function is an exponential growth model with a base of 1.04, which means that the population increases by 4% each year.

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The probability that at least one of Tom or Jerry are late for school is 0.4.

To find the probability that at least one of Tom or Jerry are late for school, we can use the formula:
P(T or J) = P(T) + P(J) - P(T and J)

Since we don't know the probability of Jerry being late (P(J)), we can use the complement rule:
P(J) = 1 - P(JC)
where JC represents the event that Jerry is not late for school.

Substituting the given probabilities:
P(T or J) = P(T) + [1 - P(JC)] - P(T and J)
P(T or J) = 0.25 + 0.3 - 0.15
P(T or J) = 0.4

Therefore, the probability that at least one of Tom or Jerry are late for school is 0.4.

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The coordinates of P and Q are P(5, 5) and Q(7, 7) respectively.

Let the centres of the circles be:

P (a, r)  and

Q (b, s)

where r and s are the radii of the circles.

Since the circles are tangent to the x-axis, we know that r = a and s = b.

Also, since the circles are tangent to each other, we have

a + b = PQ = 26

Let the point of contact of circle P with the x-axis be (p, 0)

Let the point of contact of circle Q with the x-axis be (q, 0).

Then, we know that

p + q = AB = 24

Using Pythagorean theorem, we can write:

(r² - p²) + (r² - (24 - p)²) = (s²- q²) + (s² - (24 - q)²)

Expanding and simplifying, we get:

2r² - 24r + 576 = 2s² - 24s + 576

Substituting r = a and s = b, and using the fact that a + b = 26, we get:

2a² - 24a + 576 = 2b² - 24b + 576

Simplifying further, we get:

a² - 12a + 288 = b² - 12b + 288

(a - b)(a + b - 12) = 0

Since a + b = 26, we have a - b = 0 or a + b - 12 = 0. The first case gives us a = b, which is not possible since the circles are tangent to each other. Therefore, we have a + b = 12.

Using substitution method to solve  the simultaneous equations:

a + b = 12

a + b = 26

We get a = 7 and b = 5.

Therefore, the centres of the circles P and Q are (7, 7) and (5, 5) respectively.

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The system of inequalities that models the situation is given as follows:

The perimeter of a polygon is given by the sum of all the lengths of the outer edges of the figure, that is, we must find the length of all the edges of the polygon, and then add these lengths to obtain the perimeter.

The perimeter of a rectangle of width w and length l is given as follows:

P = 2w + 2l.

You want the run to be at least 10 ft wide, hence:

w ≥ 10.

The run can be at most 50 ft long, hence:

0 < l ≤ 50.

(length has to be greater than zero).

You have 126 ft of fencing, hence the perimeter is represented as follows:

2w + 2l ≤ 126.

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The car can travel for 4 hours on one full tank of gas.

Assuming that the rate of fuel consumption is constant, we can use the given information to estimate how far the car can travel on one full tank of gas.

First, we need to find the capacity of the gas tank. Since the car traveled 150 miles on 3/4 of the tank, it means that it could travel 200 miles on a full tank (since 150 miles is 3/4 of the tank, 1/4 of the tank would be used to travel the remaining 50 miles, so 1/4 of the tank = 50 miles, which means the full tank would be 4 times 50 miles = 200 miles).

Next, we need to find the car's average speed. Since the car traveled 150 miles in 3 hours, its average speed was 50 miles per hour (150 miles / 3 hours).

Finally, we can divide the estimated distance the car can travel on a full tank of gas (200 miles) by the car's average speed (50 miles per hour) to find how many hours the car can travel on one tank of gas.

200 miles / 50 miles per hour = 4 hours

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To evaluate the given integral using cylindrical coordinates, we need to first express the given solid E and the differential volume element dv in terms of cylindrical coordinates.

In cylindrical coordinates, the paraboloid z = 1 – x^2 - y^2 can be expressed as z = 1 – r^2, where r is the distance from the z-axis and θ is the angle made with the positive x-axis. Since the solid E lies in the first octant, we have 0 ≤ r ≤ √(1-z), 0 ≤ θ ≤ π/2, and 0 ≤ z ≤ 1 – r^2.

The differential volume element dv in cylindrical coordinates is given by dv = r dz dr dθ.

Substituting these expressions in the given integral, we get:

SITE . 742 + x^2 dv = ∫∫∫E (742 + r^2) r dz dr dθ

= ∫θ=0π/2 ∫r=0√(1-z) ∫z=0^(1-r^2) (742 + r^2) r dz dr dθ

= ∫θ=0π/2 ∫r=0√(1-z) [(742r + r^3/3) - (742r^3/3 + r^5/5)] dr dθ

= ∫θ=0π/2 ∫z=0^1 [247/3(1-z)^(3/2) - 185/6(1-z)^(5/2)] dz dθ

= ∫θ=0π/2 [98/15 - 185/21] dθ

= ∫θ=0π/2 [56/315] dθ

= [28/315]π

Therefore, the value of the given integral using cylindrical coordinates is [28/315]π.

To evaluate the given integral using cylindrical coordinates, we need to express the function and limits of integration in terms of cylindrical coordinates (r, θ, z). The conversion between Cartesian and cylindrical coordinates is given by:

x = r*cos(θ)
y = r*sin(θ)
z = z

The given function in the problem is z = 1 - x^2 - y^2. Substituting the expressions for x and y in terms of cylindrical coordinates, we get:

z = 1 - r^2(cos^2(θ) + sin^2(θ))
z = 1 - r^2

Now, we need to find the limits of integration for r, θ, and z. Since E is the solid in the first octant, the limits for θ are 0 to π/2. For r, the limits are 0 to √(1 - z), and for z, the limits are 0 to 1. Then, the integral becomes:

∫(0 to π/2) ∫(0 to √(1 - z)) ∫(0 to 1) (742 + r^2cos^2(θ) + r^2sin^2(θ)) * r dz dr dθ

Solve this triple integral to find the volume of the solid E.

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Check the picture below.

The solution set is a vertical plane parallel to the y-axis and passing through the origin.

V + y = x + y can be simplified by canceling out the common term 'y' on both sides of the equation. This gives:

V = x

This is the equation of a plane in three-dimensional space where the 'x' and 'V' variables correspond to the horizontal and vertical axes respectively. Therefore, the solution set for this equation consists of all points in the plane where the 'V' coordinate is equal to the 'x' coordinate.

In other words, the solution set is a vertical plane parallel to the y-axis and passing through the origin.

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--The complete question is, What is the solution set for the equation V + y = x + y?--

Answer:

y = - 2x + 2

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here slope m = - 2 , then

y = - 2x + c ← is the partial equation

to find c substitute (- 3, 8 ) into the partial equation

8 = - 2(- 3) + c = 6 + c ( subtract 6 from both sides )

2 = c

y = - 2x + 2 ← equation of line

The mass can be any value greater than zero.

To find the mass that would produce critical damping, we first need to find the damping coefficient, which is given by:

c = damping constant * 2 * √m

where m is the mass in kg.

In this case, c = 5 * 2 * √m = 10√m.

Next, we can use the equation for the displacement of a damped harmonic oscillator to find the value of m that produces critical damping:

x = e^(-ct/2m) * (A + Bt)

where x is the displacement from equilibrium, t is time, A and B are constants determined by the initial conditions, and c and m are the damping coefficient and mass, respectively.

For critical damping, we want the system to return to equilibrium as quickly as possible without oscillating, so we set the damping coefficient equal to the critical damping coefficient:

c = 2 * √km

where k is the spring constant.

Since the spring can be held stretched 0.5 meters beyond its natural length by a force of 2 newtons, we know that the spring constant is:

k = F/x = 2/0.5 = 4 N/m

Substituting this value into the equation for critical damping, we get:

10√m = 2 * √(4m)

Squaring both sides and simplifying, we get:

100m = 16m

84m = 0

Since this is a contradiction, there is no value of m that produces critical damping. Therefore, the mass can be any value greater than zero.

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The probability that the next customer will pay with a credit card is 9/40.

To find the probability that the next customer will pay with a credit card, we need to determine the total number of customers and then calculate the fraction of those who used a credit card.

Step 1: Find the total number of customers.
56 customers paid cash, 6 customers used a debit card, and 18 customers used a credit card.
Total customers = 56 + 6 + 18 = 80 customers

Step 2: Calculate the probability of a customer using a credit card.
Number of customers who used a credit card = 18
Total number of customers = 80

Probability = (Number of customers who used a credit card) / (Total number of customers)
Probability = 18 / 80

Step 3: Simplify the fraction.

Divide both the numerator and denominator by their greatest common divisor (GCD). The GCD of 18 and 80 is 2.
18 ÷ 2 = 9
80 ÷ 2 = 40

Simplified fraction: 9/40

So, the probability that the next customer will pay with a credit card is 9/40.

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la literatura es una forma de arte que desafía los límites del lenguaje y que nos invita a descubrir nuevas formas de entender y de ver el mundo.

La literatura se define como un conjunto de obras escritas que emplean una serie de técnicas y recursos lingüísticos para crear un universo imaginario y comunicar ideas y emociones al lector.

Una de estas técnicas consiste en la violación organizada del lenguaje ordinario, lo que implica una ruptura con las normas y convenciones lingüísticas establecidas para dar lugar a una expresión más creativa y original.

Esta violencia organizada del lenguaje permite a los escritores experimentar con la forma y el contenido de sus obras, creando así una literatura rica y diversa que refleja las distintas visiones del mundo y de la vida de los autores.

En definitiva, la literatura es una forma de arte que desafía los límites del lenguaje y que nos invita a descubrir nuevas formas de entender y de ver el mundo.

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Answer: x=4/3

Step-by-step explanation:

3x-2=2

3x=2+2

3x=4

x=4/3

Answer: (a) To find the total number of fish that enter the lake over the 5-hour period from midnight to 5 A.M., we need to integrate the rate of fish entering the lake over this time period:

Total number of fish = ∫0^5 E(t) dt

Using the given function for E(t), we get:

Total number of fish = ∫0^5 (20 + 15 sin(πt/6)) dt

Using integration rules, we can solve this:

Total number of fish = 20t - (90/π) cos(πt/6) | from 0 to 5

Total number of fish = (100 - (90/π) cos(5π/6)) - (0 - (90/π) cos(0))

Total number of fish ≈ 121

Therefore, approximately 121 fish enter the lake over the 5-hour period.

(b) To find the average number of fish that leave the lake per hour over the 5-hour period, we need to calculate the total number of fish that leave the lake over this time period and divide by 5:

Total number of fish leaving the lake = L(0) + L(1) + L(2) + L(3) + L(4) + L(5)

Total number of fish leaving the lake = (4 + 20.1(0)^2) + (4 + 20.1(1)^2) + (4 + 20.1(2)^2) + (4 + 20.1(3)^2) + (4 + 20.1(4)^2) + (4 + 20.1(5)^2)

Total number of fish leaving the lake ≈ 257.5

Average number of fish leaving the lake per hour = Total number of fish leaving the lake / 5

Average number of fish leaving the lake per hour ≈ 51.5

Therefore, approximately 51.5 fish leave the lake per hour on average over the 5-hour period.

(c) To find the time when the greatest number of fish are in the lake, we need to find the maximum value of the function N(t) = E(t) - L(t) over the interval 0 ≤ t ≤ 8. We can do this by taking the derivative of N(t) with respect to t and setting it equal to zero:

N'(t) = E'(t) - L'(t)

N'(t) = (15π/6)cos(πt/6) - 40.2t

Setting N'(t) = 0, we get:

(15π/6)cos(πt/6) - 40.2t = 0

Simplifying and solving for t gives:

t ≈ 2.78 or t ≈ 6.22

Since 0 ≤ t ≤ 8, the time when the greatest number of fish are in the lake is t ≈ 2.78 hours after midnight (approximately 2:47 A.M.) or t ≈ 6.22 hours after midnight (approximately 6:13 A.M.).

To justify this, we can use the second derivative test. Taking the second derivative of N(t) gives:

N''(t) = -(15π2/36)sin(πt/6) - 40.2

At t ≈ 2.78, N''(t) is negative, which means that N(t) has a local maximum at this point. Similarly, at t ≈ 6.22, N''(t) is positive, which also means that N(t) has a local maximum at this point. Therefore, these are the times when the greatest number of fish are in the lake.

(d) To determine if the rate of change in the number of fish in the lake is increasing or decreasing at 5 A.M. (t = 5), we need to find the sign of the second derivative of N(t) at t = 5. Taking the second derivative of N(t) gives:

N''(t) = -(15π2/36)sin(πt/6) - 40.2

Plugging in t = 5, we get:

N''(5) = -(15π2/36)sin(5π/6) - 40.2

Simplifying, we get:

N''(5) ≈ -60.5

Since N''(5) is negative, the rate of change in the number of fish in the lake is decreasing at 5 A.M. (t = 5). This means that the number of fish entering the lake is decreasing faster than the number of fish leaving the lake, so the total number of fish in the lake is decreasing.

(a) Approximately 131 fish enter the lake over the 5-hour period from midnight to 5 A.M.

(b) The average number of fish that leave the lake per hour over the same period is approximately 14.8.

(c) The greatest number of fish in the lake occurs at time t = 2.94 hours, or approximately 2 hours and 56 minutes past midnight.

(d) The rate of change in the number of fish in the lake is increasing at 5 A.M.

(a) To find the total number of fish that enter the lake over 5 hours, we need to integrate the function E(t) from t=0 to t=5:

∫[0,5] E(t) dt = ∫[0,5] (20 + 15 sin(πt/6)) dt

This evaluates to approximately 131 fish.

(b) The average number of fish that leave the lake per hour can be found by calculating the total number of fish that leave the lake over 5 hours and dividing by 5:

∫[0,5] L(t) dt = ∫[0,5] (4 + 20.1t^2) dt

This evaluates to approximately 74 fish, so the average number of fish that leave the lake per hour is approximately 14.8.

(c) To find the time at which the greatest number of fish is in the lake, we need to find the maximum of the function N(t) = ∫[0,t] E(x) dx - ∫[0,t] L(x) dx over the interval [0,8]. We can do this by finding the critical points of N(t) and evaluating N(t) at those points. The critical point is at t = 2.94 hours, and N(t) is increasing on either side of this point, so the greatest number of fish is in the lake at time t = 2.94 hours.

(d) The rate of change in the number of fish in the lake at 5 A.M. can be found by calculating the derivative of N(t) at t=5. The derivative is positive, so the rate of change in the number of fish is increasing at 5 A.M.

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Answer: arc BC is 60

Step-by-step explanation: if AC is the diameter and AWB is 120 degrees,

diameter= half a circle (180)

180-120

=60

hope this helped!! (sorry if its wrong)

Answer:

[tex]\overset\frown{BC}=60^{\circ}[/tex]

Step-by-step explanation:

The diameter of a circle is a straight line that passes through the center of the circle and whose endpoints lie on the circle.

Since angles on a straight line sum to 180°, and AC is the diameter of circle W, then:

[tex]m \angle AWB + m \angle BWC = 180^{\circ}[/tex]

Given the measure of angle AWB is 120°:

[tex]\begin{aligned} m \angle AWB + m \angle BWC &= 180^{\circ}\\ 120^{\circ} + m \angle BWC &= 180^{\circ}\\ m \angle BWC &= 180^{\circ}-120^{\circ}\\m \angle BWC &= 60^{\circ}\end{aligned}[/tex]

The measure of an intercepted arc is equal to the measure of its corresponding central angle. Therefore:

[tex]\overset\frown{BC}=m \angle BWC=60^{\circ}[/tex]

Therefore, the measure of arc BC is 60°.

Therefore, when you solve this expression (6 + 5) x 2^2 - 4 , the solution is 23.

Here's an example of a numerical expression using at least three operations, a parenthesis, and an exponent that when solved has a solution of 23:

(6 + 5) x 2^2 - 4 = 23

Explanation:

- Parenthesis: (6 + 5) = 11
- Exponent: 2^2 = 4
- Multiplication: 11 x 4 = 44
- Subtraction: 44 - 4 = 40
- Solution: 40 divided by 2 = 20, then 20 plus 3 = 23

Therefore, when you solve this expression, the solution is 23.
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The point on the curve y = -4x² - 2x - 11 where the tangent is parallel to the line 8x - 3 is (-1, -13).

To find the points on the curve where the tangent is parallel to the line, we need to find where the derivative of the curve is equal to the slope of the line.

The given curve is: y = -4x² - 2x - 11

The derivative of this curve is: y' = -8x - 2

The slope of the given line is: 8

We want to find the points where the derivative of the curve is equal to the slope of the line:

-8x - 2 = 8

Solving for x, we get:

x = -1

Now, we can plug this value of x back into the original equation to find the corresponding value of y:

y = -4(-1)² - 2(-1) - 11

y = -13

Therefore, the point on the curve where the tangent is parallel to the line 8x - 3 is (-1, -13).

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Answer:

density = 22.35 g/30 cm^3 = .745 g/cm^3

A is the correct answer.

Answer:

0.75

Step-by-step explanation:

The density of a material is defined as its mass per unit volume. In this case, we are given the mass of the wooden prism and its dimensions, so we can calculate its volume and then use the formula for density.

The volume of the rectangular prism is:

V = l x w x h = 3 cm x 2 cm x 5 cm = 30 cm³

where l, w, and h are the length, width, and height of the prism, respectively.

The density of the wooden prism is then:

density = mass / volume

density = 22.35 g / 30 cm³

density = 0.745 g/cm³

Therefore, the density of the wood that the rectangular prism is made of is 0.745 g/cm³.

The probability of getting a sample mean greater than 85 thunderstorms per month for a sample of ten months is 0.0008.

The probability that the number of thunderstorms in a single month is greater than 85 can be found using the z-score formula.

z = (85 - 75) / 20 = 0.5

Using a standard normal distribution table, the probability of z being less than 0.5 is 0.6915. So the probability of having more than 85 thunderstorms in a single month is 1 - 0.6915 = 0.3085 or about 30.85%.

t = (85 - 75) / 2.00 = 5.00

Using a t-distribution table with 9 degrees of freedom, the probability of t being greater than 5.00 is very close to 0. Therefore, the probability of having a mean of more than 85 thunderstorms per month in a sample of ten months is extremely low.

Therefore, the probability of getting a sample mean greater than 85 thunderstorms per month for a sample of ten months is 0.0008.

Learn more about standard deviation

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